如图,点A、B在直线L同侧,点B’是点B关于L的对称点,AB'交于点P。
（1）、AB′与AP+BP相等吗？为什么？（2）、在l上再取一点Q，再连接AQ和BQ那么AQ+BQ与AP+BP哪一个大？为什么？...
（1）、AB′与AP+BP相等吗？为什么？
（2）、在l上再取一点Q，再连接AQ和BQ
那么AQ+BQ与AP+BP哪一个大？为什么？ 展开
（2）、在l上再取一点Q，再连接AQ和BQ
那么AQ+BQ与AP+BP哪一个大？为什么？ 展开
4个回答
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Huang Xin mapping
Morning News reporter Huang Yan
If it is not much behind and MVP of the Adidas logo in front of reporters like Derrick Rose is an athlete. Arrived in Shanghai yesterday, from the airport out of the Rose than all the sub-imagined smaller, but also from time to time with a slightly humble expression, hard to believe that the NBA last season he had just crowned the youngest MVP (most valuable player).
In fact, Ross has a lot of those big names indeed different, he is easy to blush,nike heels, Emotion Shigeyoshi, but not good at camouflage, even in the face reporters,jordan heels, he is not willing to look with an aggressive look directly at each other. This is a bit like he is now the location of the Chicago Bulls, is not glamorous, but there is feeling full. Strictly speaking, he can not become the next Michael Jordan,nike free run, but enough to be unique in NBA history that Derrick Rose.
frank face shut down: in addition to prayer, or prayer
Rosss opening with some stereotypes, although he repeatedly said the staff around you do not want to "NBA shut down" as the theme, but still can not avoid such questions. This summer, when NBA stars such as wholesale bulk packages to flock to China, how should shut down the crisis, has become that they must face.
Fortunately, Ross does not resist this, even in the face, "Bryant signed in Shanxi," the timeliness of this topic, he is still willing to face the response. But he believes that players like him, except to wait, as powerless.
Ross said he has been fully prepared to shut down, no matter how long he must wait. "I do not know what the outcome will be, but now for us is really very difficult, all the players want to end as soon as possible, we can only pray for both sides reach an agreement, not only for ourselves, but for the fans No fans, we and the game will not exist. "
in Rosss eyes,ken griffey jr shoes, he is not a person can be about NBA world, more often, he is willing and the other players, hard do a good job, holding the salary on time, and then put a long holiday. So, Ross repeatedly stressed that he was particularly interested in signing Bryant to understand the decision of Shanxi, in his view,cheap griffey shoes, this is not as people imagine it is not sincere. "I think we do not understand how difficult for us now, if there is sufficient income, we will not make any other decision,nike high heels, only in their own arena to play good,griffey sneakers, hard win, but now, With the NBA lockout, many players had to make other choices for practical reasons, we can do what you say? "Ross said," I think in addition to prayer,king griffey shoes, or prayer. "
Speaking stalled topic, Ross has been hunched shoulders, his face with a helpless expression,nike heels for women, as if to try to tell them to shut down for the unfairness. This makes the whole interview process will look more like a complaint. This some funny pictures, almost consistently throughout the interview, the only "accident" appears at the end of time. A reporter asked changing the subject rather abruptly Ross: What is your favorite girls? I did not expect to win just to survive but also got angry young man immediately put away all the expressions, to squeeze out such as "beautiful", "moderate" so popular adjective you want to get away, but he was downcast eyes panic has betrayed his true feelings. Some fear that his love, at least do not want too early to reveal their exact definition for love, but for the simple reason, because he was still young when it was shut down he does not worry the only thing.
love Chicago: boots printed on the subway home
Of course, do not want to talk about love, does not mean no one will love his heart.
Adidas new building for the Ross Ross II boots (adizero Rose 2.0), there is a people feel incredible detail. Heel behind a big L,dunk heels, but this is not the abbreviation of the name Ross. According to his own, which is another name for the Chicago subway, the subway home showing the distribution as an L-shaped, which he considered most representative of the entire image of the city of Chicago, so, in the design of shoes, Ross strongly demanded that it be printed on the the whole shoe most "essence" of the ankle.
The idea surely is not who can understand, unless the love of family love to the bone, who would have thought such publicity with the way the home introduced to the world? In fact, only chatted about Chicago, Ross will be showing off his tender side. Perhaps only on the land, he was able to find all their own.
"If you shut down, I think I would not leave too far from Chicago, if possible, I would like to marked my life." He said so. The eyes of determination, so you have to believe he said that.
Ross said he never thought of small to large city may give his all, a child barefoot in the park playing football on the grass indiscriminately,new ken griffey shoes, there will be no illusion over their own standing the NBA one day. But sometimes luck is always a loss to give these kids some tips,griffey shoes, and Jordan appear, so that he finally found that one of their own world. Ross said he was pleased with Jordan in Chicago occurred in the intersection, and that this will be the driving force in his life.
from a few words is not difficult to see that he has on the topic of heart tired of Jordan, in fact, chatted with Ross Jordan, the more often a fellow can feel between the intimacy. Ross joined the NBA from the start, many people love him and Jordan on the scale of comparison, he can do, but in the city of Chicago, found that he and Jordan are the intersection points. And compared to the idol, the Chicago given by his sense of belonging,griffey shoes, clearly makes him feel warm and cordial.
a close look at Rosss new boots,griffeys shoes, the insoles that never was concerned about, is full of the Chicago subway map. Criss-cross the subway line, carrying the Ross drip from the civilian to the superstar. Ross in a paranoid way,ken griffey jr sneakers, this section is known locally as "Chicagos beating heart of steel" completely in front of us. As he himself said, this can represent all of his experience.
Author: Huang Yan
Morning News reporter Huang Yan
If it is not much behind and MVP of the Adidas logo in front of reporters like Derrick Rose is an athlete. Arrived in Shanghai yesterday, from the airport out of the Rose than all the sub-imagined smaller, but also from time to time with a slightly humble expression, hard to believe that the NBA last season he had just crowned the youngest MVP (most valuable player).
In fact, Ross has a lot of those big names indeed different, he is easy to blush,nike heels, Emotion Shigeyoshi, but not good at camouflage, even in the face reporters,jordan heels, he is not willing to look with an aggressive look directly at each other. This is a bit like he is now the location of the Chicago Bulls, is not glamorous, but there is feeling full. Strictly speaking, he can not become the next Michael Jordan,nike free run, but enough to be unique in NBA history that Derrick Rose.
frank face shut down: in addition to prayer, or prayer
Rosss opening with some stereotypes, although he repeatedly said the staff around you do not want to "NBA shut down" as the theme, but still can not avoid such questions. This summer, when NBA stars such as wholesale bulk packages to flock to China, how should shut down the crisis, has become that they must face.
Fortunately, Ross does not resist this, even in the face, "Bryant signed in Shanxi," the timeliness of this topic, he is still willing to face the response. But he believes that players like him, except to wait, as powerless.
Ross said he has been fully prepared to shut down, no matter how long he must wait. "I do not know what the outcome will be, but now for us is really very difficult, all the players want to end as soon as possible, we can only pray for both sides reach an agreement, not only for ourselves, but for the fans No fans, we and the game will not exist. "
in Rosss eyes,ken griffey jr shoes, he is not a person can be about NBA world, more often, he is willing and the other players, hard do a good job, holding the salary on time, and then put a long holiday. So, Ross repeatedly stressed that he was particularly interested in signing Bryant to understand the decision of Shanxi, in his view,cheap griffey shoes, this is not as people imagine it is not sincere. "I think we do not understand how difficult for us now, if there is sufficient income, we will not make any other decision,nike high heels, only in their own arena to play good,griffey sneakers, hard win, but now, With the NBA lockout, many players had to make other choices for practical reasons, we can do what you say? "Ross said," I think in addition to prayer,king griffey shoes, or prayer. "
Speaking stalled topic, Ross has been hunched shoulders, his face with a helpless expression,nike heels for women, as if to try to tell them to shut down for the unfairness. This makes the whole interview process will look more like a complaint. This some funny pictures, almost consistently throughout the interview, the only "accident" appears at the end of time. A reporter asked changing the subject rather abruptly Ross: What is your favorite girls? I did not expect to win just to survive but also got angry young man immediately put away all the expressions, to squeeze out such as "beautiful", "moderate" so popular adjective you want to get away, but he was downcast eyes panic has betrayed his true feelings. Some fear that his love, at least do not want too early to reveal their exact definition for love, but for the simple reason, because he was still young when it was shut down he does not worry the only thing.
love Chicago: boots printed on the subway home
Of course, do not want to talk about love, does not mean no one will love his heart.
Adidas new building for the Ross Ross II boots (adizero Rose 2.0), there is a people feel incredible detail. Heel behind a big L,dunk heels, but this is not the abbreviation of the name Ross. According to his own, which is another name for the Chicago subway, the subway home showing the distribution as an L-shaped, which he considered most representative of the entire image of the city of Chicago, so, in the design of shoes, Ross strongly demanded that it be printed on the the whole shoe most "essence" of the ankle.
The idea surely is not who can understand, unless the love of family love to the bone, who would have thought such publicity with the way the home introduced to the world? In fact, only chatted about Chicago, Ross will be showing off his tender side. Perhaps only on the land, he was able to find all their own.
"If you shut down, I think I would not leave too far from Chicago, if possible, I would like to marked my life." He said so. The eyes of determination, so you have to believe he said that.
Ross said he never thought of small to large city may give his all, a child barefoot in the park playing football on the grass indiscriminately,new ken griffey shoes, there will be no illusion over their own standing the NBA one day. But sometimes luck is always a loss to give these kids some tips,griffey shoes, and Jordan appear, so that he finally found that one of their own world. Ross said he was pleased with Jordan in Chicago occurred in the intersection, and that this will be the driving force in his life.
from a few words is not difficult to see that he has on the topic of heart tired of Jordan, in fact, chatted with Ross Jordan, the more often a fellow can feel between the intimacy. Ross joined the NBA from the start, many people love him and Jordan on the scale of comparison, he can do, but in the city of Chicago, found that he and Jordan are the intersection points. And compared to the idol, the Chicago given by his sense of belonging,griffey shoes, clearly makes him feel warm and cordial.
a close look at Rosss new boots,griffeys shoes, the insoles that never was concerned about, is full of the Chicago subway map. Criss-cross the subway line, carrying the Ross drip from the civilian to the superstar. Ross in a paranoid way,ken griffey jr sneakers, this section is known locally as "Chicagos beating heart of steel" completely in front of us. As he himself said, this can represent all of his experience.
Author: Huang Yan
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相等，你可以连接BB',交点为Q,便可知三角形BPQ与B'PQ是全等三角形
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解：
因为点b’是b关于直线l的对称点
所以pb＝pb'，qb＝qb'
所以aq＋qb＝aq＋qb'
在δaqb'中，根据“三角形中任意两边的和大于第三边”得：
aq＋qb'＞ab'
所以aq＋qb＞ab'
因为ab'＝pa＋pb'＝pa＋pb
所以aq＋qb＞pa＋pb
因为点b’是b关于直线l的对称点
所以pb＝pb'，qb＝qb'
所以aq＋qb＝aq＋qb'
在δaqb'中，根据“三角形中任意两边的和大于第三边”得：
aq＋qb'＞ab'
所以aq＋qb＞ab'
因为ab'＝pa＋pb'＝pa＋pb
所以aq＋qb＞pa＋pb
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已知:点A、B在直线l的同侧,AB=4cm,点c是点B关于直线l的对称点,ac交直线L于于点D,AC=5CM，则△ABD的周长为 （ ）cm. 9
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